Invoke the named method as a "function", i.e. as a method on the current "self"
object, using the specified argument count. It is expected that previous calls
to the compiler has prepared the exact number of argument values necessary for this
call. Those values will be consumed, and the result of the call will be generated.

yieldSpecific

Invoke the block passed into this method, or throw an error if no block is present.
If arguments have been prepared for the block, specify true. Otherwise the default
empty args will be used. Use specific-arity call paths if possible.